find the force required to stop a car of mass 10 kg with two passengers each of 50 kg sitting inside if it is moving at 60 kilometre per hour speed and takes 5 second to stop
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Explanation:
AS WE KNOW THAT
FORCE=MA
SO THEREFORE
MASS =MASS OF CAR + MASS OF 2 PASSENGERS
MASS =10+50*2
=110
NOW ACCLERATION = CHANGE IN VELOCITY ÷CHANGE IN TIME
=VELOCITY =60*5/18
= 50/3 m/s
time = 5 sec
so therefore put in above formula
=50÷3÷5
= 3.33m/sec square
so therefore force = ma
=110*10÷3
1100÷3 N
366.66Newton
therefore force applied is equals to 366.66 newton
please check the ans once
not sure
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